Improvement in apparatus for mixing medical compounds



1. H. buena. AApparatus for Mixing Medical Compounds, &c. No.149,845.PatentedAprir21,1s74.

UNITED STATES PATENT OFFICE.

JOHN vH. DOERR, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN APPARATUS FOR MIXING MEDICAL COMPOUNDS, &e.

Specification forming part of Letters Patent No. 149,845, dated April21, 1874; application filed February 23, 1874 To all whom it mayconcern:

Be it known that I, JOHN H. DOERR, of the city and county ofPhiladelphia, in the State of Pennsylvania, have invented a Machine forManufacturing Medical Compounds, Src., of which the following is aspeciiication:

My invention in the first place relates to the cover of a mixinglnachine with annular perforated grooves -which receive ingredients tobe mixed, (from vessels above the machne,)

. which pass through the perforations into a tub which revolves with thecover. In the second place the invention relates to a hollow perforatedshaft with stirrers which revolve in said tub in an opposite directionto the motion of the latter. The hollow shaft is provided with a cupfrom which one or more ingredients are supplied, the same passingthrough the perfo rations and mixing with the ingredients which passinto the tub through the perforated annular grooves of the tub-cover.The motion of the tub and its cover, and the reverse motion of the shaftand its stirrers, are given by any suitable means.

In the accompanying drawings, Figure 1 is a side elevation of myimproved machine. Fig. 2 is a front View of the same. Fig. 3 is a topview of the cover F. Fig. 4 is a cross-section of the same. Fig. 5 isaside view of the hol- 4low perforated shaft B.

A, and revolves with it. As it revolves different ingredients are fedfrom j ars or other vessels G into the annular grooves a of the coverand pass through perforations b into the tub. Other kinds of ingredientsfor forming the com- F is the cover of the tub,

pound, or the same kinds as pass through the perforated grooves of thecover, are fed from the cup H of the central shaft B above mentioned,passing down the hollow of the shaft and through its perforations O intothe tub. The shaft is shown in detail in Fig. 5. As the tub and coverare revolved rapidly in one direction and the central hollow shaft inthe contrary direction, the ingredients are considera;

l the perforated hollow shaft, and the latter may be used without theperforated cover; butthe two together are preferable, as the ingredientsbeing thereby considerably mixed by being thrown together, dispense withmuch of the work of the stirrers.

I claim as my invention- 1. rlhe perforated grooved cover F,.incombination with the jars G, or other reservoirs, and thetub A, forthe distribution into the tub A of the ingredients to be compoundedduring the motion of the stirrers O C, substantially as described.

2. The perforated shaft B, having a cup, H, in combination with the tubA and stirrers C for distributing the ingredients into the tub while theshaft is in motion, substantially as described. y

3. The combination of the perforated shaft B and perforated groovedcoverF with the tub A for distributing the materials into the tub whilethe machine is in motion, and the mixing of the same so as to form ahomogeneous compound, substantially as described.

, JOHN H. DOERR. Witnesses:

VlHoMAs J. BEWLEY,

STEPHEN Usrrcx.

